Both Nikon D2X and Fujifilm X-S1 have 12.0 MP resolution sensors but Nikon D2X's sensor is APS-C (23.7 x 15.7 mm ) and Fujifilm X-S1's sensor is 2/3-inch (8.8 x 6.6 mm ).
Since Nikon D2X's has a larger sensor area with the same resolution, this means that it also has a larger pixel area hence better light collecting capacity for a given aperture compared to Fujifilm X-S1.
Below you can see the D2X and X-S1 sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon D2X and Fujifilm X-S1 Cameras
As seen above, Nikon D2X has a 6.4x Larger sensor area than Fujifilm X-S1. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.
DxOMark Sensor Scores
Both Nikon D2X and Fujifilm X-S1 sensors have been tested by DxoMark. DxoMark scores camera sensors for color depth (DXO Portrait), dynamic range (DXO Landscape) and low-light sensitivity (DXO Sports), and also gives them an overall score. Of the two cameras that we are comparing, D2X has scored 59, 10 points higher than X-S1.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Nikon D2X
59
22.1 bits
10.9 Evs
476 ISO
Fujifilm X-S1
49
20.4 bits
11.2 Evs
216 ISO
Sensor size sets the circle of confusion, so it drives how much depth of field each
of these bodies gives you at a given aperture. You can calculate it exactly for the
Nikon D2X
or the
Fujifilm X-S1 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(APS-C versus 2/3-inch),
so compare them at the same framing rather than the same focal length.
Put the same focal length on the smaller sensor and it will show less depth of
field, not more, because it also crops tighter. The calculator shows the
full frame equivalent focal length for each body so you can match the framing.
